Craftsman 917.270751 Owner's Manual page 30

8.5 hp electric start 42" mower 6 speed transaxle lawn tractor
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TROUBLESHOOTING
CHART
PROBLEM
Poor grass
discharge
Headlight(s)
not
working
(if so equipped)
Battery will not
charge
Loss of drive
Engine "backfires"
when turning
,engine "OFF"
CAUSE
CORRECTION
Engine speed too slow.
Travel speed too fast.
Wet grass.
Mower deck not level.
Low/uneven
tire air pressure.
Worn, bent or loose blade.
Buildup of grass, leaves
housing.
Mower drive belt worn.
Blades improperly
installed.
Improper blades used.
Clogged
mower deck vent
holes from buildup of grass,
leaves, and trash around
mandrels.
Switch is "OFF".
Bulb(s) burned out.
Faulty light switch.
Loose or damaged wiring.
Blown fuse.
Bad battery cell(s).
Poor cable connections.
Faulty regulator
Faulty alternator.
Freewheel
control in
"disengaged"
position.
Motion drive belt worn,
damaged,
or broken.
Air trapped in transmission
during shipment or
servicing.
Engine throttle control not
set at "SLOW"
position for 30 seconds
stopping engine.
Place throttle control in
"FAST" position.
, •
Shift to slower speed.
Allow grass to dry before
mowing.
Level mower deck.
Check tires for proper air
pressure.
Replace/sharpen
blade.
Tighten blade bolt.
Clean underside
of mower
and trash under mower.
Replace mower drive belt.
Reinstall blades sharp edge
down.
Replace with blades listed in
this manual.
Clean around mandrels to
open vent holes.
Turn switch "ON".
Replace bulb(s).
Check/replace
light switch.
Check wiring and connec
tions.
Replace fuse.
Replace battery.
Check/clean
all connections.
Replace regulator.
(if so equipped).
Replace alternator.
Place freewheel
control in
"engaged"
position.
Replace motion drive belt.
Purge transmission.
Move throttle control to
"SLOW" position and allow
to idle for 30 seconds before
stopping engine.
30

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